Multipled critical emails vanished when moving from trash to inbox

I'm using Thundebrird version 17.0 on Android 15. I sent last month an email (from Thundebrird Desktop) to multiple people and got from around 20 of them responses which I critically need to preserve. I deleted none of them (intentionally). Today I found out that 15 of them disappeared from my inbox, when checking on Thunderbird on my laptop. On my phone I can find those 15 in my trash folder grouped together. I was super relieved to find these critical responses but also confused since I definitely didn't delete 15 of those emails. Most likely they were grouped together and I swipe delete them by accident. I mark each of them and select "move to" -> "Inbox". And now they just vanished. They are no longer in my trash and don't show up in my inbox. Normally when I move from deleted to inbox they move fine, same for spam.

Anything I could do? Anywhere I could look for these emails?